djr.js

function DJR() {

  this.ajax = function(params, success, url, method) {
    $.ajax({
        params:params,
        success: success,
        url: url,
        type: method
    })
  };

    for(var action in this.routes){
        this[action] = function(params, success){
            this.ajax(params, success, );
        }
    }

}

function CursosController(){ DJR.apply(this); }

CursosController.prototype.routes = {
    index: {
        url: "/cursos", method: "GET"
    },
    create: {
        url: "/cursos", method: "POST"
    },
    destroy: {
        url: "/cursos/:id", method: "DELETE"
    }
}

var cursos = new CursosController
cursos.create({ nome: "Teste" }, function(){});